Patent application number | Description | Published |
20080223351 | Method of Producing Silicon Blocks and Silicon Wafers - In a method of producing silicon blocks by cutting a silicon ingot by the use of a silicon ingot cutting slurry containing abrasive grains and an alkaline substance so as to provide the silicon blocks that can be produced into silicon wafers each having a thin thickness with reduced substrate damage at the time of producing a solar battery, the content of said alkaline substance is at least 3.5 mass % with respect to the mass of the entire liquid components of said slurry, and said slurry contains an organic amine of from 0.5 to 5.0 by a mass ratio with respect to water in the liquid components of said slurry. Said slurry is used at a pH of 12 or more and at a temperature of from 65 to 95 degrees C. | 09-18-2008 |
20090101197 | Solar Battery and Production Method Thereof - Included are a semiconductor layer that is formed on a light receiving surface of a semiconductor substrate and is of a type opposite to that of said semiconductor substrate, an electrode of a semiconductor layer that is of the same type as that of the semiconductor layer of said light receiving surface and is formed on a rear surface opposite to said light receiving surface, an electrode that is of the same type as that of said semiconductor substrate and is electrically insulated from said electrode of the semiconductor layer of the same type as that of the semiconductor layer of said light receiving surface formed on said rear surface, and a semiconductor layer that is of the same type as that of the semiconductor layer of said light receiving surface and electrically connects between the semiconductor layer of said light receiving surface and said electrode of the semiconductor layer of the same type as that of the semiconductor layer of said light receiving surface formed on said rear surface. | 04-23-2009 |
20090214796 | Method for Forming Antireflection Film - The invention provides a method for forming antireflection films comprising a step that simultaneously accomplishes sintering of a coating film containing an antireflection film precursor formed on the surface of a glass body, and tempering of the glass body. It is thereby possible to form antireflection films at satisfactorily low cost. | 08-27-2009 |
20090285979 | SOLAR BATTERY AND MANUFACTURING METHOD THEREFOR - When forming an electrode by printing several times, the cross section area of the electrode is increased and the resistance is reduced while more electrode material is required, which leads to a cost up and waste of resources. There is provided a solar cell manufacturing method for forming an electrode of a predetermined pattern by repeating printing on a substrate surface by a predetermined number of times. A mask pattern for printing the entire predetermined pattern is used at least once among the predetermined number of printings while mask patterns, each for printing a part of the predetermined pattern, are used in the other printings, thereby forming the electrode of the predetermined pattern. | 11-19-2009 |
20100186806 | PHOTOVOLTAIC MODULE - A solar cell has a non-light-receiving side and a light-receiving side that faces a backside of an optically-transparent cover plate. A heatsink has a backside that faces the non-light-receiving side of the solar cell. The heatsink is formed of a graphite-containing material having a concave and convex texture as a radiating fin. | 07-29-2010 |
20100193028 | SOLAR CELL - A solar cell includes a photoelectric conversion layer, a first electrode on one surface of the photoelectric conversion layer, a second electrode provided on other surface of the photoelectric conversion layer, and a third electrode on the other surface of the photoelectric conversion layer. The third electrode is substantially rectangular with its corners rounded off in the in-plane direction of the photoelectric conversion layer, and overlaps the second electrode at the periphery thereof. | 08-05-2010 |
20100218811 | SOLAR BATTERY CELL - It is an object of the present invention to provide a solar cell with improved mechanical strength without increasing resistance between the electrodes. | 09-02-2010 |
20110053310 | PHOTOVOLTAIC DEVICE AND MANUFACTURING METHOD THEREOF - The manufacturing method includes: forming a P-type silicon substrate and a high-concentration N-type diffusion layer, in which an N-type impurity is diffused in a first concentration, on an entire surface at a light-incident surface side; forming an etching resistance film on the high-concentration N-type diffusion layer and forming fine pores at a predetermined position within a recess forming regions on the etching resistance film; forming recesses by etching the silicon substrate around a forming position of the fine pores, so as not to leave the high-concentration N-type diffusion layer within the recess forming region; forming the low-concentration N-type diffusion layer, in which an N-type impurity is diffused in a second concentration that is lower than the first concentration, on a surface on which the recesses are formed; and forming a grid electrode in an electrode forming region at a light-incident surface side of the silicon substrate. | 03-03-2011 |
20110126901 | SOLAR CELL AND MANUFACTURING METHOD THEREOF - A solar cell comprises a substrate that includes a photoelectric conversion function, a first electrode provided on one surface of the substrate, a second electrode provided on other surface of the substrate, and a third electrode provided on the other surface of the substrate with its periphery overlapping the second electrode in the in-plane direction of the substrate for extracting an electric power from the second electrode. The thickness of the second electrode is larger than that of the third electrode, and the difference between the thickness of the second electrode and that of the third electrode is within a range from equal to or more than 10 micrometers to equal to or less than 30 micrometers. Thereby, in the solar cell, an electrode separation (alloy separation) can be effectively prevented. | 06-02-2011 |
20110143486 | Solar Cell and Manufacturing Method Thereof - Forming an impurity diffusion layer of the second conductivity type and an antireflective film on one surface side of a semiconductor substrate of the first conductivity type; applying the first electrode material onto the antireflective film; forming a passivation film on the other surface side of the semiconductor substrate; forming openings in the passivation film to reach the other surface side; applying a second electrode material containing impurity elements of the first conductive type to fill the openings and not to be in contact with the second electrode material of adjacent openings; applying a third electrode material onto the passivation film to be in contact with the entire second electrode material; forming at a time, by heating the semiconductor substrate at a predetermined temperature after applying the first electrode material and the third electrode material, the first electrodes, a high-concentration region, and the second electrodes and third electrode. | 06-16-2011 |
20110297207 | SOLAR BATTERY MODULE - A solar battery module having a plurality of solar battery cells embedded in an in-plane direction in a front-surface sealing member by separating the solar battery cells at a distance therebetween, the solar battery cells being electrically connected to each other in a filling material sandwiched between the front-surface sealing member having translucency and a back-surface sealing member. The back-surface sealing member is a high reflectance portion having a high reflection rate such that an average reflection rate of light of a wavelength in a range of 400 to 1200 nanometers is equal to or higher than 50% in at least a region corresponding to the solar battery cells, and the back-surface sealing member includes a low reflectance portion having a low reflection rate such that an average reflection rate of light of a wavelength in a range of 400 to 1200 nanometers is lower than 50%, at any position between a front surface of the reflection prevention film of the solar battery cells and the back-surface sealing member, in a region between the solar battery cells adjacent to each other or in a region corresponding to a region in a thickness direction of the solar battery module. | 12-08-2011 |